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Effects of Integrated Nutrient Management on the Performance of Mango on Hills in Three Districts, Bangladesh

Md. Zonayet
Krishi Gobeshona Foundation (KGF), CRP-1: Hill Agriculture, Sustainable Land Management (Component-II), Bandarban, Bangladesh.

Alok Kumar Paul
Department of Soil Science, Sher-e-Bangla Agricultural University (SAU), Dhaka-1207, Bangladesh.

Mostak Ahmed
On-Farm Research Division (OFRD), Bangladesh Agricultural Research Institute, Bandarban, Bangladesh.

Abstract/ Executive Summary:

This experiment was conducted in a mango garden at Bandarban, Khagrachari, and Rangamati district in the hilly area of Bangladesh from 15 October 2015 to 30 May 2017 to study the effects of integrated nutrient management on the performance of mango in hills. The experiment was laid out in a randomized block design with three replications. There were four treatments for Mango (5-10 yrs. old). The treatments are: 4 (four) Fertilizer packages * T₁= Control, T₂= N₂₃₀P₅₃K₁₀₀ S ₃₆Zn₃ B₄ + CD/Compost 20000 g/plant, T₃= 125% of T₂ and T₄= 150% of T₂. In Khagrachari site, Mango yield varied from 7.72-22.30 kg/plant. The highest mango yield 22.30 kg/plant was in T4 treatment (150% of T₂). In Bandarban site, Mango yield ranged between24.13-48.25 kg/plant. The highest mango yield 48.25 kg/plant found in T₃ treatment (125% of T₂). In Rangamati site, Mango yield varied from 9.62-23.10 kg/plant. The highest mango yield 23.10 kg/plant found in T₄ treatment (150% of T₂). In most cases, a significant difference in yields was found in T₄ treatments in three districts.

Keywords: INM; Soil fertility; Yield; Mango, Krishi Gobeshona Foundation

Location: Bandarban, Khagrachari, and Rangamati district

Start Date: 00-10-2014

End Date: 00-05-2017

Program Area: Crop-Soil-Water Management

Commodity: Nutrient status

Objectives:

To identify the better combination of organic and inorganic fertilizer packages for sustainable productivity of mango in the hill.

Methodology:

The experiment was conducted in the mango garden in three hilly Districts in Bangladesh during the period from 15 October 2015 to 30 May 2017. The experimental area is located in Hill Tracts (CHT); the only extensive hilly area in Bangladesh lies in the southeastern part of the country (210 25' N to 230 45' N latitude and 910 54' E to 920 50' E longitude) bordering Myanmar on the southeast, the Indian state of Tripura on the north, Mizoram on the east, and Chittagong district on the west. It belongs to Bandarban, Khagrachari, and Rangamati under the AEZ 29 (Northern and Eastern Hills Tract). The soil texture is sandy loam and silty loam with pH 4.0- 5.5. The three-factor experiment was laid out in the randomized block design with three replications. There are four treatments for Mango (5-10 yrs. old). The treatments are: 4 (four) Fertilizer packages * T₁= Control, T₂= N₂₃₀P₅₃K₁₀₀ S ₃₆Zn₃ B₄ + CD/Compost 20000 g/plant, T₃= 125% of T₂ and T₄= 150% of T₂.Each row was used as a block. In addition, cow dung and mustard oil cake was applied at the rate of 2 kg and 2 kg plant^-1. Manures and 50% of the inorganic fertilizers were applied in October 2015 by digging rings around the trees. Rest 50% of the inorganic fertilizer was applied again during March 2016 in the same ring around the trees before the fruit set. Two irrigations (I2) were given, one after the first application of fertilizer and another after the second application of fertilizer. In the case of one irrigation, it was applied after the first application of fertilizer. The base of the trees was kept weed-free during the period of experimentation. Preventive measures were taken by applying cypermethrin (Ripcord/Cymbush/Arrivo) 10EC at the rate of 1.0 ml/litre before and after fruit set to control the insect pest like mango mite, caterpillar, mango fruit borer etc. Precautionary measures against disease infestation especially mosaic virus and fruit root were taken by spraying Dithene M-45 @ 4.5 g/litree at the time of flowering. Fruits were harvested when they attained full maturity indicating fruit colour changes from greenish to yellowish red. Harvesting was done from 15 May to 24 May 2005. Ten panicles from each plant were selected at random and observations were made on fruit set, fruit drop, fruit length, fruit diameter and fruit weight. Fruit quality was determined by a panel test method. Fruits plant^-1 and fruit yield were obtained by counting and weighing all the mango harvested from each plant, respectively. The data were analyzed statistically by means of computer package MSTAT. The differences among the treatment means were adjudged by Duncan’s Multiple Range Test (DMRT) as outlined by Gomez and Gomez.

Source of Information: Asian Journal of Soil Science and Plant Nutrition - 6(3): 1-7, 2020

Article Link (Online Journal): DOI:10.9734/AJSSPN/2020/v6i330088

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Sufficient and balanced application of organic and inorganic fertilizers is a major component of INM. However, the following research findings on INM technology in different soils on mango cultivation, cropping system/patterns of Bangladesh clearly revealed the benefits of INM in respect of yield sustainability and improvement of soil fertility. However, targeting a high yield with a high cropping intensity is the most logical way to raise the total production from the country’s limited resources. Since the nutrient turnover in the soil-plant system is considerably high in intensive farming, neither the chemical fertilizers nor the organic and biological sources alone can achieve production sustainability. Even with the balanced use of chemical fertilizers, high yield levels could not be maintained over the years because of deterioration in soil physical and biological environments due to low organic matter content in soils. In this context and as a further response to economic recession, and also to conserve and improve soil fertility the concept of the Integrated Nutrient Management (INM) system has been adopted in mango cultivation in the hilly areas of Bangladesh. The following future studies should be undertaken, covering more dimensions in related matters:

The study was conducted on the farmers of three hill districts. Similar studies may be undertaken in other parts of the country to verify the findings of the present study.
The study investigated the relationship of the farmers with only one dependent variable in mango production. Further research should be undertaken for exploring the relationship of other characteristics of the farmers with other dependent variables.

Knowledge Management: Journal